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From: Marco Wahl <marcowahlsoft@gmail.com>
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Subject: Re: How to visit a file and kill the current buffer?
Date: Sun, 10 Sep 2017 20:15:08 +0200
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Mario Castelán Castro <marioxcc.MT@yandex.com> writes:

> Is there a way to visit a file in the current window and at the same
> time kill the previous buffer that occupied the current window?

There is `find-alternate-file' which meets your requirements AFAICS.

I use it mostly from dired buffers where the function (actually
`dired-find-alternate-file') is bound to "a".


Ciao
    Marco
         https://marcowahl.github.io